My experiences with a "really good" Shuttle board, the AK35GT/2, didn't impress me.
#1) Supposedly, the board supported a 1/5 multiplier, but I couldn't get it much over the 150's, let alone 166. And, of course, with a 1/4 multiplier, this lead to hard drive corruption.
The same chip (AGOIA 1600+) ran beautifully at 170FSB on an Epox 8K3A.
#2) I never was able to narrow down the problem, but with several different pieces of Samsung PC2700, and PC2100, it would set the command rate to 1T - not sure if this was programmed in the SPD, but I could not find a single piece of memory that would boot up stably with the board - in each case, if the machine would POST at all, I had to manually change the command rate in order to boot an OS.
The same pieces of memory ran beautifully with a 1T command rate on the same 8K3A.
These really aren't minor issues - sure, the chipset isn't specc'ed for 166mhz, but the memory issue took me weeks to track down - I thought the board was defective. It's not, it just automatically sets the command rate to an unstable setting.
So, I am reluctant to buy another Shuttle board, even for cheap. On the other hand, I haven't had a bad experience yet with Epox boards (I have owned 4). And price isn't a factor, I have had problems with VERY EXPENSIVE Asus boards as well.